MAX13302数据手册ADI中文资料规格书

描述 Description

The MAX13300/MAX13302 combine four high-efficiency Class D amplifiers with integrated diagnostic hardware for reliable automotive audio systems. The MAX13300/ MAX13302 deliver up to 50W at 10% THD+N per channel into 2Ω when operating from a 14.4V supply. The internal diagnostics evaluate each channel’s output impedance to check for shorts across the outputs, to the battery, or to ground. The I²C interface allows the system to query critical device parameters such as device temperature and output clipping. The devices are programmable to four different I²C addresses. The audio amplifiers feature single-ended analog inputs with a common negative input. Three gain settings are internally adjustable through the I²C interface to 13dB, 21.6dB, and 26dB. The Class D amplifier has 10 programmable switching frequencies between 300kHz and 750kHz. The BTL outputs are protected against short circuits and thermal overload. The outputs can be configured as a 2-, 3-, or 4-channel amplifier. All the devices provide 50V load-dump protection, and are offered in the thermally enhanced, 48-pin TSSOP-EPR package operating over the -40°C to +125°C temperature range.

特性 Features

• High Output Power (10% THD+N)
• 2 x 100W into 1Ω at 14.4V
• 4 x 50W into 2Ω at 14.4V
• 4 x 30W into 4Ω at 14.4V
• 2 Channels Can Be Paralleled
• Feedback After the Filter
• Improves THD+N
• Low Output Impedance
• High-Frequency Response
• Improved Damping of Complex Loads
• Enables Low-Cost Inductors
• 100dB SNR
• Low 0.04% THD+N
• 70dB PSRR
• On-Board Diagnostics
• Short-to-Battery/GND
• Open/Shorted Load
• Tweeter Detect
• Protection and Monitoring Functions:
• Short-Circuit Protection
• 50V Load-Dump Protection
• Programmable Clip Detection
• DC Offset Detection
• Open Battery/GND Tolerant
• Thermal-Overload Protection
• Thermal Warning Indication
• Four-Address I²C Control Interface
• Low-Power Shutdown Mode
• Up to 90.5% Efficiency
• -40°C to +125°C Ambient Operating Temperature
• 48-Pin TSSOP-EPR (Top Side Exposed Pad) Package
• AEC-Q100 Qualified

应用 Application

• 有源扬声器系统
• 汽车立体声系统
• 分立式放大模块
• 无线环绕系统
• 无线装置
• 后排座娱乐系统